Liquid Controls LectroCount LCR 600, Installation-Parts

Page: 69 / 78

Installation
69
Data Communications
RS-232 and RS-485 Communications
The LCR 600 is capable of interfacing with RS-232 and R-S485 communication protocols. Data
connections for these protocols are made at the J2 and J3 terminal blocks. A jumper, located on the left
side of the CPU board, can also affect communication protocol; however, it must remain in the B position
for all LCR 600 applications. See note and diagram below.
Keep the B Position
The LCR 600 is shipped with the jumper in the B position. Keep it there. There are no cases in which
it must be moved to the A position.
Do NOT Try to Remove J2
The J2 terminal block is permanently attached to the CPU board.